Sawhorse



Patented July 24, 1923.

eaver earner reins.

JAMES M. LAWLOR, OF TOPEKA', KANSAS.

SAWHORSE.

Application filed June 12, 1922. Serial No. 567,766.

To all whom it may concern Be it known that I, JAMns M. LAwLoR, acitizen of the United States, residing at T0- peka, inthe county ofShawnee and State of Kansas, have invented certain new and'usefulImprovements in Sawhorses; and I do declare the following to be a full,clear, and exact description of the invention, such as will enableothers skilled in the art to which it appertains to make and use thesame, ref- "which may be conveniently assembled and disassembled, thelatter being important when it is desired to knock-down the structurefor transportation, storing, etc. i

The saw horse can be constructed of standard lumber and the legs canbetenoned into mortises orslots in the top or ridge piece and securelyfastened therein by a turnbuckle consisting of twoheaded bolts bearing011 opposite sides of complementary legs and connected'by athreadedsleeve so that thelegs canbe drawn together to force them at angles intoslots inthe top ori'idge piece-of the saw horse. i

The novelconstruction of the invention will be apparent by referencetothe following description in connection with the accompanyingdrawings, in which Fig: 1 is a perspective View of a saw horseconstructed in accordance with my invention. Fig. 2 is a fragmentary,longitudinal view through a part of the top or ridge piece, part of oneof the legs being shown in elevation, and

i Fig. 3 is an end viewof the saw horse. (The top or ridge piece 1 mayconsist of standard lumber commercially known as a 2 4, that is, it mayconsist of a beamtwo inches thick and four inches wide. Near therespective ends ofthe beam 1 are pairs of slots 2 and 3 at one end and 1and 5 at the other. The side wallsof the slots are transverselyinclined; that is, the widest distance between the slots is at thebottom of the beam 1 and the narrowest distance isat the top.

The saw horse is provided with four legs 6, 7, 8 and 9, provided withtongues or tenons 10, 11, 12 and 18 respectively. The tenons have lesscross sectional area than their legs and they are so cut that shouldersl lare formed for eachvleg which will abut against the under face of themember 1. The legs may consist of standard lumber commercially known as1 x is, that is, they may be one inch thick and four inches wide. Thelegs are arranged in pairs,6 and 7 cOnstituting one pair and 8 and 9another pair, and between the respective pairs of legs are 1 X 2 spacingstruts 15 and 16, which have at their respective ends tenons 17 and 18adapted to pass through openings in the legs, as

sleeve 23. The bolts are oppositely threaded to receive opposite threadsin the ends of the sleeve 23, the sleeve 23be1ng provided with a hole 2%ror'tne insertion of a pin.

nail or nail set whereby the turnbuckle can I be rotated.

The bolts have angular offset portions 25 and 26 which are received inopenings in the legs. The inclined ofiisetportions 25 and 26 positionthe heads of the bolts at angles to a true horizontal line so that theheads of the bolts will be parallel with the inclined sides of the legs.Therefore, when the washers 25' areplaced on the bolts, they will lieflat against the inclined sides of the legs while the threaded portionsof the bolts will lie in true horizontal planes and in axial alignmentso that when the sleeve is turned, the threaded ends of the bolts can bedrawn together, tending to draw the unper ends of the legs together andthereby "force the tenonsinto the inclinedslots in the ends of the toppiece or ridge member 1 so that they will be held in clamping position.The tighter the sleeve 23 is screwed, the tighter will, be theengagement between the tenons 10, 11, 12 and 13 and their complementary.will be clearly seen by reference to the draw- I The spreading struts15 and 16 will constitute fulcrums for the legs SO that when the sleeveis turned to draw the bolts together, there will be a slight teeteringaction of the legs against the ends of the struts 15 and 16. The strutsalso Serve for spacing the lower ends of complementary legs apart.

The struts have an additional advantage in that they constituteshelf-supporting brackets because if desired, a shelf 26 may rest uponthe struts l5 and 1 6 to support artiroles to be used at the time thesaw horse is employed.

Inasmuch as it is the prime purpose of my invention to construct a sawhorse at a minimum cost, I recommend the use of wood, as abovedescribed, because the 2 X 4s, 1 X as and 1 {x 2s are kept in stock inany lumber yard. It is apparent, however,- thatthe invention might bemadeot metal although at mayflthen' be withdrawn, the struts can beremoved, and the legs laid parallel one upon the other and then parallelwith the ridge piece 1 so that a very small bundle can be made of theknocked down parts, thereby facilitating transportation and storage. v H

The olfse't or inclined portions of the bolts is an important feature ofthe invention and they not only insure that the fac- 1 ing members, thatis, the washers or heads of the bolts will lie flush against theinclined sides of the legs but they also will prevent the bolts fromturningin the holes in the legs when the sleeves are turned to draw thebolts together.

From the foregoing it will be apparent that the saw horse can beinexpensively and conveniently constructed, that the parts will berigidly held together after they have been properly set up, and thatshould the occasion demand, the parts may be'readily disassociated fortransportation and stor- What I claim and desire to secure by LettersPatent is:

1. .A saw horse comprising an elongated, horizontal top member havingvertical slots therein inclined toward the longitudinal center of thetop'member, legs at the respective, ends of the top member having'tenonsreceived in said slots, and a turn buckle between each pair of logs, theturn buckle comprisinginwardly extending bolts projecting throughcomplementary legs and provided with aligning threaded ends, the headedportions of the bolts passing through lateral holes in the legs atangles to the axes of the threaded portions and a threaded sleeve foreach pairot bolts adapted to be turned to draw the threaded ends of thebolts together to force the tenons into the inclined slots in the endsof the top member.

2. A saw horse comprising an elongated horizontal top member havingvertical slots therein inclined toward the longitudinal center of thetop member, legsa't the respectiveends' 0t vthe-top .member havingtenons received in said slots, a turnbuckle between each pair of legs,the turnbuckle comprising inwardly extending bolts projecting throughcomplementary legs and provided with aligning threaded ends, the headed,portionsof the bolts passing through lateral holes in the legs atangles to the axes of the threaded portions and a threaded sleevet'oreach pairof bolts adapt ed to beturned to draw the threaded ends ofthe bolts together to ,iorce the tenons into the inclined slots in theends of the top member, and a spreading strut betweeneach pairot legsand below the turnbuckle.

3. A sawhorse comprising a horizontal top beam having pairs of verticalslots near 1ts respective ends, the respective slots of each pair beinginclined toward one an other, pairs of legs having tenons engaging saidslots, and adjustable connectors engaging the legs near their upperportions to drawthem together so as to force the tenons into the slots.a 1 v 1 l. A saw horse comprising a horizontal top beam having pairs ofvertical slots near its respective ends, the slots of each pair beinginclined one toward the other, pairs of legs having tenons engaging saidslots, adjustable connectors engaging the legs near their upper portionsto draw them together so as to force the tenons into the slots, andspreaders between the pairs of legs near their lower ends. y

5. A saw horse comprisinga beam having pairs of slots near itsrespective ends, pairs of leg having tenons engaging said slots,turnbuckles connecting the upper portions of the legs, eachturnbuckle-consisting of bolts passing through complementary legs,threaded sleeves connecting them, and cooperative means betweentheibolts and the legs for preventing turning of the bolts with respectto .thelegs, said co-operative means comprising inclined portions on thebolts and the walls of the openings through which the bolts project,

In testimony whereof I aifiir my signa-

